New to Telerik UI for ASP.NET AJAX? Download free 30-day trial

Virtualization

ID	Contact Title	Contact Name	Country	Rating


1	Sales Consultant	Georg Pipps	Italy	1 2 3 4 5
2	Sales Consultant	Matti Karttunen	France	1 2 3 4 5
3	Accountant	Elizabeth Lincoln	England	1 2 3 4 5
4	Accountant	Antonio Moreno	Italy	1 2 3 4 5
5	Marketing Manager	Hanna Moos	USA	1 2 3 4 5
6	Sales Associate	Patricio Simpson	Brazil	1 2 3 4 5
7	Accounting Manager	Elizabeth Lincoln	Brazil	1 2 3 4 5
8	Marketing Manager	Jaime Yorres	Spain	1 2 3 4 5
9	Marketing Assistant	Hanna Moos	Spain	1 2 3 4 5
10	Sales Manager	Elizabeth Lincoln	Spain	1 2 3 4 5
11	Accountant	Jaime Yorres	Spain	1 2 3 4 5
12	Sales Associate	Pascale Cartrain	Bulgaria	1 2 3 4 5
13	Marketing Manager	Antonio Moreno	Spain	1 2 3 4 5
14	Sales Consultant	Howard Snyder	France	1 2 3 4 5
15	Accounting Manager	Howard Snyder	Italy	1 2 3 4 5
16	Sales Agent	Matti Karttunen	Germany	1 2 3 4 5
17	Sales Consultant	Howard Snyder	France	1 2 3 4 5
18	Owner	Paul Henriot	Argentina	1 2 3 4 5
19	Sales Agent	Patricio Simpson	Spain	1 2 3 4 5
20	Sales Manager	Antonio Moreno	USA	1 2 3 4 5
21	Marketing Manager	Georg Pipps	Bulgaria	1 2 3 4 5
22	Sales Representative	Matti Karttunen	Italy	1 2 3 4 5
23	Accounting Manager	Elizabeth Lincoln	Austria	1 2 3 4 5
24	Sales Representative	Hanna Moos	England	1 2 3 4 5
25	Sales Representative	Howard Snyder	Germany	1 2 3 4 5
26	Owner	Elizabeth Lincoln	Argentina	1 2 3 4 5
27	Marketing Assistant	Elizabeth Lincoln	Argentina	1 2 3 4 5
28	Sales Associate	Elizabeth Lincoln	Austria	1 2 3 4 5
29	Sales Associate	Hanna Moos	Bulgaria	1 2 3 4 5
30	Owner	Paul Henriot	Germany	1 2 3 4 5
31	Sales Agent	Paul Henriot	England	1 2 3 4 5
32	Sales Manager	Jaime Yorres	Argentina	1 2 3 4 5
33	Sales Manager	Jaime Yorres	Italy	1 2 3 4 5
34	Sales Associate	Patricio Simpson	France	1 2 3 4 5
35	Sales Representative	Matti Karttunen	USA	1 2 3 4 5
36	Sales Associate	Paul Henriot	Spain	1 2 3 4 5
37	Marketing Assistant	Pascale Cartrain	Italy	1 2 3 4 5
38	Marketing Assistant	Antonio Moreno	France	1 2 3 4 5
39	Accountant	Paul Henriot	Italy	1 2 3 4 5
40	Sales Agent	Matti Karttunen	Argentina	1 2 3 4 5
41	Marketing Manager	Jaime Yorres	Bulgaria	1 2 3 4 5
42	Marketing Assistant	Matti Karttunen	Italy	1 2 3 4 5
43	Sales Manager	Howard Snyder	Germany	1 2 3 4 5
44	Accountant	Pascale Cartrain	Italy	1 2 3 4 5
45	Sales Agent	Jaime Yorres	Spain	1 2 3 4 5
46	Accounting Manager	Pascale Cartrain	Argentina	1 2 3 4 5
47	Accountant	Antonio Moreno	Spain	1 2 3 4 5
48	Marketing Assistant	Jaime Yorres	USA	1 2 3 4 5
49	Marketing Manager	Antonio Moreno	Bulgaria	1 2 3 4 5
50	Sales Representative	Jaime Yorres	England	1 2 3 4 5
51	Sales Associate	Paul Henriot	USA	1 2 3 4 5
52	Sales Representative	Patricio Simpson	USA	1 2 3 4 5
53	Marketing Assistant	Hanna Moos	Austria	1 2 3 4 5
54	Sales Manager	Matti Karttunen	Bulgaria	1 2 3 4 5
55	Sales Representative	Georg Pipps	Italy	1 2 3 4 5
56	Sales Representative	Howard Snyder	Argentina	1 2 3 4 5
57	Sales Associate	Hanna Moos	England	1 2 3 4 5
58	Sales Manager	Patricio Simpson	Germany	1 2 3 4 5
59	Marketing Assistant	Antonio Moreno	France	1 2 3 4 5
60	Sales Manager	Hanna Moos	Austria	1 2 3 4 5
61	Marketing Manager	Howard Snyder	Spain	1 2 3 4 5
62	Sales Representative	Paul Henriot	France	1 2 3 4 5
63	Sales Agent	Howard Snyder	Bulgaria	1 2 3 4 5
64	Sales Representative	Pascale Cartrain	Italy	1 2 3 4 5
65	Owner	Paul Henriot	Bulgaria	1 2 3 4 5
66	Sales Associate	Antonio Moreno	Spain	1 2 3 4 5
67	Accounting Manager	Jaime Yorres	Argentina	1 2 3 4 5
68	Sales Representative	Howard Snyder	Austria	1 2 3 4 5
69	Sales Consultant	Antonio Moreno	USA	1 2 3 4 5
70	Sales Agent	Paul Henriot	England	1 2 3 4 5
71	Sales Agent	Howard Snyder	France	1 2 3 4 5
72	Sales Agent	Elizabeth Lincoln	France	1 2 3 4 5
73	Sales Consultant	Antonio Moreno	Austria	1 2 3 4 5
74	Sales Representative	Hanna Moos	Brazil	1 2 3 4 5
75	Sales Consultant	Antonio Moreno	Germany	1 2 3 4 5
76	Accountant	Paul Henriot	England	1 2 3 4 5
77	Sales Manager	Paul Henriot	Italy	1 2 3 4 5
78	Owner	Elizabeth Lincoln	USA	1 2 3 4 5
79	Sales Associate	Paul Henriot	Italy	1 2 3 4 5
80	Sales Associate	Elizabeth Lincoln	France	1 2 3 4 5
81	Marketing Assistant	Pascale Cartrain	Brazil	1 2 3 4 5
82	Sales Consultant	Elizabeth Lincoln	Spain	1 2 3 4 5
83	Marketing Manager	Georg Pipps	Bulgaria	1 2 3 4 5
84	Accountant	Paul Henriot	England	1 2 3 4 5
85	Sales Representative	Paul Henriot	Germany	1 2 3 4 5
86	Owner	Jaime Yorres	Austria	1 2 3 4 5
87	Owner	Pascale Cartrain	England	1 2 3 4 5
88	Owner	Howard Snyder	Germany	1 2 3 4 5
89	Sales Manager	Hanna Moos	Italy	1 2 3 4 5
90	Sales Consultant	Elizabeth Lincoln	Austria	1 2 3 4 5
91	Sales Representative	Howard Snyder	Austria	1 2 3 4 5
92	Accounting Manager	Elizabeth Lincoln	Bulgaria	1 2 3 4 5
93	Sales Representative	Matti Karttunen	Austria	1 2 3 4 5
94	Sales Representative	Pascale Cartrain	Germany	1 2 3 4 5
95	Sales Consultant	Hanna Moos	Bulgaria	1 2 3 4 5
96	Marketing Manager	Howard Snyder	Austria	1 2 3 4 5
97	Owner	Paul Henriot	Argentina	1 2 3 4 5
98	Sales Consultant	Pascale Cartrain	Argentina	1 2 3 4 5
99	Accountant	Patricio Simpson	Bulgaria	1 2 3 4 5
100	Accountant	Patricio Simpson	France	1 2 3 4 5


...81 82 83 84 85 86 87 88 89 90 ... Item 85001 to 86000 of 300000 Page: of 300 GoPage size:

Sort Ascending
Sort Descending
Clear Sorting
Columns
- ID
- Contact Title
- Contact Name
- Country
- Rating

About this demo
C#
VB
Download demo code files
Isolate this demo as a stand-alone application

RadGrid's virtualization feature allows you to handle hundreds of thousands of rows without negatively impacting the user experience. The control achieves this thanks to its ItemsPerView property allowing you to control the number of items loaded at a time. Users can now scroll, as well as show, hide, resize and reorder columns without any waiting time.

This demo shows how quickly Telerik's ASP.NET DataGrid can handle user interactions with 300,000 items. You can configure the component to allow scrolling through the entire data set or only through the current page by using EnableCurrentPageScrollOnly property,.

<%@ Page Language="c#" CodeFile="DefaultCS.aspx.cs" Inherits="Telerik.GridExamplesCSharp.Performance.Virtualization.DefaultCS" %>

<%@ Register TagPrefix="telerik" Namespace="Telerik.Web.UI" Assembly="Telerik.Web.UI" %>
<%@ Register TagPrefix="qsf" Namespace="Telerik.QuickStart" %>
<!DOCTYPE html>
<html xmlns='http://www.w3.org/1999/xhtml'>
<head runat="server">
    <title>Telerik ASP.NET Example</title>
    <link href="styles.css" rel="stylesheet" />
</head>
<body>
    <form id="form1" runat="server">
    <telerik:RadScriptManager runat="server" ID="RadScriptManager1" />
    <telerik:RadSkinManager ID="RadSkinManager1" runat="server" ShowChooser="true" />
    <telerik:RadAjaxLoadingPanel runat="server" ID="RadAjaxLoadingPanel1"></telerik:RadAjaxLoadingPanel>
    <telerik:RadAjaxPanel runat="server" ID="RadAjaxPanel" LoadingPanelID="RadAjaxLoadingPanel1" CssClass="demo-container">
        <telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server"  AutoGenerateColumns="false"
            AllowSorting="true" GroupingEnabled="false"
            EnableHeaderContextMenu="true" AllowPaging="true" PageSize="1000" OnNeedDataSource="RadGrid1_NeedDataSource">
            <MasterTableView TableLayout="Fixed">
                <Columns>
                    <telerik:GridBoundColumn UniqueName="ID" HeaderText="ID" HeaderStyle-Width="50px" DataField="ID"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactTitle" HeaderText="Contact Title" HeaderStyle-Width="150px" DataField="ContactTitle"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="ContactName" HeaderText="Contact Name" HeaderStyle-Width="150" DataField="ContactName"></telerik:GridBoundColumn>
                    <telerik:GridBoundColumn UniqueName="Country" HeaderText="Country" HeaderStyle-Width="100px" DataField="Country"></telerik:GridBoundColumn>
                    <telerik:GridRatingColumn UniqueName="Rating" HeaderText="Rating" HeaderStyle-Width="100px" DataField="Rating"></telerik:GridRatingColumn>
                </Columns>
            </MasterTableView>
            <ClientSettings ReorderColumnsOnClient="true" AllowColumnsReorder="true" ColumnsReorderMethod="Reorder">
                <Virtualization EnableVirtualization="true" InitiallyCachedItemsCount="2000"
                    LoadingPanelID="RadAjaxLoadingPanel1" ItemsPerView="100"/>
                <Scrolling AllowScroll="true" UseStaticHeaders="true" ScrollHeight="500px" />
                <Resizing AllowColumnResize="true" />
            </ClientSettings>
            <PagerStyle Mode="NextPrevNumericAndAdvanced"></PagerStyle>
        </telerik:RadGrid>
    </telerik:RadAjaxPanel>
    </form>
</body>
</html>

Support & Learning Resources

Find Assistance

Submit a support ticket if you have an active license or trial
Post in the forum if you don't have access to support

Virtualization

Related Resources

Support & Learning Resources

Find Assistance